Effect of removal of organic material on stable isotope values in skeletal carbonate from taxonomic groups with complex mineralogies.

CONCLUSIONS: Based on these results and when using skeletal carbonate of complex mineralogies, we recommend considering the abandonment of pretreatment of biogenic carbonate for stable isotope analysis due to confounded results from previous studies, difficulties with preparation, and/or the absence of significant effects of organic material on isotope values. If pretreatment is necessary, avoid roasting especially at higher temperatures and durations, use minimal bleaching, and in general avoid using High-Mg calcite species in O and C stable isotope studies. If bleaching is used, clearly indicate the concentration and duration of exposure. PMID: 32681532 [PubMed - as supplied by publisher]
Source: Rapid Communications in Mass Spectrometry : RCM - Category: Chemistry Authors: Tags: Rapid Commun Mass Spectrom Source Type: research